I noticed that too and even emailed them. Basically they just measure your hash rate in terms of shares submitted, and with a small pool like this some random variance is normal. Initially I also just noticed that my hash rate was always lower than expected, but now I see it occasionally gets reported too high as well.

Can you please tell me what does it mean if my real hashing power is 4x420+ Mh\s but at your pool it is displayed as 4x250-400 Mh\s?

Thanx!

Our pool only really shows an estimate. If you look at the total pool hash rate you will see it swings up and down. We are still tweaking it, but no matter how much we tweak it, it will never show what your own miner shows. Your miner will always show you your "true" hash rate.

Have no worries, the hash rate we show you is merely informational, and has no bearing on shares, estimated rewards, or score.

I have a 295 MH/s card myself, right now pool.bitp.it shows my hash rate at 325 MH/s... other times I've seen it as low as 220 MH/s... lol.

We actually have round 2 setup to use a slower decay factor, but we didn't feel comfortable changing the decay mid-round. Once we start round 2, it should be better.

So when you notice something is fucked you rather leave your users assraped than fixing the mistake asap and limiting the damage. There is a difference between users seeing their estimated reward wrong and getting payed wrong.